Refillable cartridge-fuse.



E. B. MALLOBY. BEPILLABLB OABTBIIJGE FUSE. unieuro! FILED :un x1. xsu.

d 1J il WJTNESSES.- JNVENTOR. W BY h I I .'M'tum i Aromwsn Patented ocu. 10,1911.

UNITED STATES PATENT oEEioE.

EDWARD B. MALLOBY, 0F WILKINSBUBG, PENNSYLVANIA.

BFILLABLE CARTRIDGE-FUSE.

1,005,253. Specitivn 0f Letterlatent- Patented Oct. 10, 1911.

,Application filed .Tune 17, 1911. Serial No. 633,771. i i

To all .whom yitmay concern: same to the blade contact pieces. Fig. 3 is a Be it known that I, EDWARD B. MALiJonY, detail of one of the securing members, and a. citizen of the United States, residing at Fig. 4 isa similar viewof'sti-ll another secur- Wilkinsburg, in, the county of Allegheny ing member. Fi 5 also shows a detaikof 60 and State of Pennsylvania, have invented a one-half ofthe b ade carrying wings; Fig. certain new and useful Improvement .in Re- 6 is a similar -view of a channel piece to re iillable Cartridge-Fuses, of which the Afolceive the end of the fuse; Fig.` 7 illustrates lowing is a specification. a modified form of securing means, and Fig.

My invention pertains to renewable car- 8 shows a modification of the member seen 55 tridg'e fuses of the electrical class and of a in Fig. 4e. type to accommodate currents of high or low Throughout the drawings the numeral 1 capacity, which are ca able of being easily designates -thc body portion or cartridge Awhich can be used repeatedly. material, an

recharged when the se blows out, and shell made preferably of a non-conducting having the exteriorly threaded 7o The primary object of my invention is to end portions, at the extreme outer part being provide a renewable cartridge fuse, of the formed of one or a plurality of recesses 2. so called `knife blade type, which will pos- The ends-ofthe fuse '8, which may be of Sess the vital and necessary functions 0f anydesired size ofconfi uratioii, are securely good electrical and mechanical contact beg seated in vsuitable terminal members 4 of a 75 Ween the renewable fuse element and the channel formation as'shown in Fi 6, that knife blade elements, which constitute the are removably, or integrally fixe to, and

Ameans for insertingthe'entire device in an 'carried by the inner ends of the contact vide a renewable cartridge fuse embodyin electrical` circuit for protective purposes. blade members 5. When said terminal Another objectof my invention is to propieces are made removable I employ a, nut e0 and bolt means 6 to imite the said contacting the necessary means for retaining the kni members, the eiids of said fuse being reinovblade eleme ts in a` centered position, and ably held between the registering poitiops revent theml getting out oi. line, and keepof the two members 4 and 5, and, by reasen,j in them on the same lane with the removof' the chantielformation provided onthe said 85 ab e fuse element, at t e same time holding element 4, the fuse will be held in aliiieinenu` vthem rigid so as to properly eggge the reand prevented from any free piaf, or lateral similar places for their rece ceptacles lprovid d on swi ards and movement; the object being to provide-as tion; erfect an electrical contact at this point as Still another pertinent object of `my in- 1s, possible. If necessary Ican di ense with 90 vention is to provides. construction the printhe element 4, and in that event simply oml cipal parts of which are made of metal ploy an ordiiar' washer in conjunction-with and olv nature. Y

i f idea and spirit of the invention, and within sembled formation, ,Filg"'.l2,arerst i approximately the combined featuresset stampings or die work, in order to minimize the'niit 6 for unitin the fuse anni the cost of manufacture .of devices of 'this blades. Rigidly secured at eit er side of the said blades are the two-se ments of the wing 95 VI do not limit myself to the exact form elements 7, shownn Iletei Fig. 5, which can and construction shown and hereinafter debe of any desired configuration, but of asize s lied, A reserving the right to make any capable of being passed4 freely' throughtlief iisdlolessary alterations and amendments there bod portion. 'y n I Y y s, in which-will be in accord with the ori inal- T e united fuse and blades; shown the scope of thefclaims appended hereto. rsorted 'in the shelli 1,` then, in order4 ,With the, above objects in view, as well as P 'seel'iiely retain i"saldi blades and ruse, the re-4 others 'that willv appear during the follojwii'igid maining parts of my invention are brought'y detailed descriptlon, my invention involvesinto service. "Thisinvolves rshthetalnng ist off the flatoirciilarwasher 8 shown in Fig. forth in thespeciication, and shownin the 4, which involves the centrali disposed slot acoompanyin drawings. l' 9, slipping it in from the Vai e and seating Referring ien to said-drawings, 1 the saine around the blades 5, at a pointb is a longitudinal section of1` myl"1nvention in tween the end of' the shellf 1 sind wing ele- 11o assembled' formation; Fig. 2 a detached' 7. The diameter of'theelei'nent'( is view'ofthe fuse showing-meunier securing. Asuch that it permits free insertion, and movement of the blades through the shell 1" but the members' 8 are of a slightly greater diameter than the opening throu h the shell, and by resting against the end o said shell, and contacting with the element 7, will center the blades and lfuse, and prevent any longitudinal movement of these said members. In order to prevent rotary movement of the said blades at this point, and to guard w against any possibility o fracture or twist v ing of the inse, I empio another .atcirculary washer 10, shown in Pig. 3, which is provided liewise with a centrali disposed slot 11, and an integrally formed ug portion 12. This Vmember is p1 ced over the free ends of thel blades, and contactswith the enter face.' of'theelement 7 the lug 12 enterligllestotf 1, wd portiimlcf y d seatin in the notch 2 formed in the endj o Vthe she l, after which step the centrally apertured or slotted screw ca s 1.3 are turned on'over threaded ends o said shell, and upon engaging the members 10 will-'serve to lock and unite allthe elements rigidly in osition and hold the blades and fuse in xedalinement. In this sition'these said members cannot 'be move intil released by unserewing the' caps 13, which steep will be necessary when the fuse has burn out and is to be replaced b a new one.- 4 ,n

In the modili construction shown, in F' 7 I ein loi theform of waaherslibwn in ig.4 8, whc 'involves the additional lug feature 8', designed to engage in one` ofthe recesses 2 formed in the ,end ofthe s ell, and serves to hold and lock the member; 'a inst rotary movement when seated and per orming its intendedemction; as heretofore described.A y 4o What I claim as my invention is:

1. Ina rellable cartridge fuse the combination with the hollow insulating body y port-ion and, contact blades, ofafuse intermediate of the inner ends of lsaid blades adapted :forv removable contact therewith;

means formed on said blades, coperatin with an elementintermediate of the sai means and body portion, forcentering the blades and fuse and forfpreventin o0. tudinal movement thereo means or preventingrota movement of the said blades and fuse; an lockingv means to hold all the elements in fixed position. l ,r l

2. n atrellable cartridge tuscan insulatin hollow body portion havingrecessed en s; blade contact members rojecting into and extending 'beyond the sai body; a fuse intermediate of and adapted for reinovable contactl witlr the innerends 'ofl the said .60 blades;, wings carried by the blades; means seated aroimdseid blades and 'ositioiied betweeiiggthgw' 1 and body-for cen- `Pte w 1.-: and addio: roventthe rst mentioned. washer-.sf

longiin the rec the bod for preventing rocap members seated over the blades and contacting with the body for locking all the elements in holdin osition.

Y, v3. In a cartri ge fuse of theY class described the combination with a hollow insulating body portion having exteriorly threaded and recessedend ortions, of. blade mem bers interiorly positioned and extending beyond the ends of the said body; a removable fuse intermediate of and contacting with the inner ends of the blademembers; wings carried by the blades and 'tioned exteriorly of the body gpg-tion; a s otted washer seated `.around desmndmoltgting-,withhe 'iinortwns afecnnlalntiad washer-seated `over each blade', contaotingngainst the said wing elein the d ends of the body; an screw;

t e second mention sulat-ing bodyI having exteriorl threaded and recessed end portions, of bla e' members interiorly positioned and prolecting beyond the ends o said body; a rem Vvable fuse intermediate of and contacting with the inner ends of id blade members; wingmembers carriedby seid blades and positioned exte riorly of said body gcrtion; a slotted washer seated aroiindtlief4 lade members and contacting with the wing members and end oi said body, said washer' carrying a lug for engagement in therecessed ends of the body' a second slotted washer seated around said blade mem rs'and over and contacting with the wing m rs and carrying a lug for engagement in the other slotted w her and in the recessed ends of the body; nd screw cap members for eng 'ment with the bod portion and a instt e' second mentions washer for locEiing all the elements in holding position.

In a-renewable cartri fuse-of the .class described the combination with a liolportion having extelow insulating bod 4 I,

andY notched end portions riorl threaded of ade members exteriorly positioned and projectin into the endsfof said body; a removable use between and contacting with the inner ends of said blade members; win

carried b saidl blades and and contacting. with the endsvof said body. is ma ,Sinaai washer ,miei iii-@undead ioiigtudinal movementof'saidi simiente;Vv

bladesand--- lei-liriid with said, wing ,elsmenm and a ug or lugs forengageinentin the slotlcr slots in the lirst washerffor loc g all the elemhnts in hold,l

'fuse of the class described the combination. with a' hollow ine" tary movement of said b ades and fuse; and

ineiits, and carrying a lug for enga ement sf ycap members for enga ement with the-bod' E,

'tioned vein teriorly o said bod ;a slotte washer seaty 'ed around said .bla es and under and con` tactuig with said wing members andover" mentioned Washer and in the notch or notches in the end of said body; und screw cap members for engagement with the body and over and Contactin with the last mengl tioned washer for holfmg and locking all the elements rigidly in proper position.

In a renewable cartridge fuse of the y class described the combination with :11h01,-

low insulating body portion having exteriorly threaded and notched ends, of blade members carrying flanged means, for positioning in said body; n removable fuse between and contacting with the inner ends of seid blade members; means provided on the inner ends of said blades to hold the fuse in fixed alinement with said blades; means seated around said blades and contacting with the ends of the body and with the Han ed ortion of the blades for centering the lades und fuse and for preventing longitudinal movement of said members; means contacting with said flanged portion and engaging in the notched ends of the body for preventing rotary movementof said blades and fuse; nndyscrew cap members contacting with the last mentioned means and with the body for locking all die elements in holding position.

7, A cartridge fuse capable of being refilled, involving zur insulating hollow body portion, contacty blades, and renewable fuse;

means carried by the blades, cof'iperatingv with n removable element adapted Jfor engagement with the body portion, for centerlng the blades and fuse and for preventing longitudinal movement thereof; additional renovable means, engaging the first mentioned means and body portion, for reventing rotary movement of said bla es and fuse; und locking means, engaging the lest mentioned ineens and body, for holding all the elements in proper position,

In testimony whereof I affix my signature in the presence of two Witnesses.

EDWARD B. MALLORY. Witnesses:

EMMA- F. LEA, W. T. D. EAMSEY. 

